Combined jack and wire stretcher



April 27, 1926. 1,582,119

J. W. CHERRY COMBINED JACK AND WIRE STRETCHER Fi led Def). 1, 1925 2 S11eet s.She"et 1 f7 27 la; Z6 Z? I Z? /5 /7 37 m 0 as I 2/ 1 I I II M 3*7 /7 A 3i L z:

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April 27, 1926. 1,582,119

J. W. CHERRY COMBiNED JACK AND WIRE STRETCHER NE 35 a7 54 JMlkerry Patented Apr. 27, 1926.

' UNITED STATES PATENT OFFICE.

JOHN W. CHERRY, OI CUMRO, NEBRASKA,

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Application filed December "To all whom it may concern:

Be it known that I, JOHN W. CHERRY, a citizen of the United States, residing at Cumro, in the county of Custer a-nd State of Nebraska, have invented certain new and useful Improvements in Comhin'ed'Jacks and Wire Stretchers, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to lifting jacks, and

particularly to a lifting jack of the type wherein a worm is used for lifting the standheight.

A still further object is i to provide a lifting jack which, as before stated, may be used as a stretcher or tighten'er provided with means whereby, after the wire has been stretched a certain definite amount, the stretched wire may be held and a new hold taken to still further stretch the wire. v My'invention is illustrated in the accompanying drawings, wherein 1 Figure 1 isa side elevation of my combined jack and wire vtightener shown. in use for tightening fence wire; V

Figure 2 is a like 'ew to Figure 1 but showing one side of the casing removed;

Figure 3 is an elevation showing my device used as a jack;

Figure 4 is avertical section on the line 4-4 of Figure 3;;

Figure 5 1s a vertical section onthe line 5'.5 of Figure 3;

Figure 6 1s a vertical section on the line 6-6ofFigdre'3;"

Figure-Tie asection on the line 7-4? of In'Figure 3, I have illustrated the device as used as a jack. Referring to this figure, 10 designates a; base, as-it may be termed, upon which is erected the casing of the jack, this casing consisting of the two side plates .11, the end plate 12, and the end plate 13. These are all riveted to each other or other- 1, 1925. .serialno. 72,534.

wise attached. The casing at its upper end is laterally enlarged, as at 14, and enclosed therein, and operating upon a pivot 15 is a skew gear 16. Operating throughthecas ing and bearing against .the rear wall 13 is the standard 17 of the jack which is formed upon one edge face with the skewed rack 18 with which the skew teeth of the gear 16 engage.

The upper end of this standard- 17 is angularly bent, as at 19, and formed upon one .face of this standard is" the fixed jaw 20 and the pivoted clamping jaw 21 which has a serrated rounded face. The lowerend of the casing is open and the base plate 10 is rectangular in form to leave a rectangular I opening through which the standard is projectible. The casing plates 11 adjacent the base 10 are formed to provide the outwardly projecting hook 22, the two walls of the casing being brought together and welded or otherwise engaged, and above this'hook the walls of the casing are formed to provide the two outwardly projecting lugs 23.

Riveted or otherwise. attached to the casing walls 11 is the strap 21 which extends 1 laterally across the casing at the lower portion of the enlarged part 14: and is then extended downward and formed with a hearing 25 through which the shaft 26 extends. This shaft inward of the bearings is formed with a collar 27 and carries upon it the worm 28 which engages with the skew gear 16. A strap 29 is riveted or otherwise attached tothe casing and extends across the end thereof and forms a bearing for the inner end of the shaft 26. The shaft 26 may carry "ahandle attached thereto but, as illustrated, is reduced to provide a square head 30 and a handle 31 is formed with a square socket to engage said head whereby the shaft 26 may be-turned. The strap 29 .is shown 1 as carrying upon it .the fixed jaw 32 and the double pivoted serrated jaws 33, thejaw which is particularly necessary where the device is used as a wire stretcher and it may bedesired to clamp either end of the wire within the gripping device formed by the parts 32 and 33.

,v Mounted upon the shank or'standard 17 for adjustment thereon is an approximately rectangular collar 34 which has a length such that when the collar. is disposed in a plane at right angles to the longitudinal axis of the standard 17, the collar may be moved up and down upon the standard 17. One end of this collar is formed witha hook 35 or other like support. The opposite end of the collar is formed with a latch 36 which is adapted to engage between the teeth of the rack 18 and is formed with the projecting lug 37 constituting a handle. A fiat spring 36* fastened to collar 34 supports the latch 36 and keeps it in place. It will be seen that when this collar is disposed in an inclined plane, the latch 36 will engage between two of the teeth 18 and the collar-will be jammed upon the standard and held from any downward movement, that is, movement toward the casing. The latch 36 is somewhat inclined so as to conform to the shape of the skew teeth on the rack 18.

When it is desired to adjust the collar 34 upon the standard 17, it is only necessary to turn the tooth 36 by means of the handle 37 a slight distance to get it out of the space between two teeth 18 and then the collar may be adjusted up and down upon the standard. The collar 34 with its hook 35 is adapted to support a load and then the standard 17 may be shifted vertically by means of the shaft 26 to any desired extent to raise the load. The collar 34 may be shifted up or down the standard so as to accommodate loads of different heights in cases where the load is lower than the upper end of the standard 17. It is possible with this device to' lift a-load which is initially close to the round to a relatively consider able height y first lowering the collar 34 to its lowest position, engaging the load, lifting the standard of the jack to its highest position, carrying with it the load, then supporting the load on timbers, and then lowering the standard of'the jack until the upper end of the jack can get beneath the load and again lift the jack.

It is to be particularly noted that the hook 22 is formed by an extension of the two side walls 11, these extensions of the two side walls being brought together in convergent relation and then welded or otherwise engaged with each other. This leaves an aperture 29 at .the base of the hook which is in line with the space between the two lugs 23. These lugs 23, when the device is used as a wire stretcher, are adapted to bear against the post A, as shown in Figure 1, and thus-permit the wire B to have free passage along the face of the stretcher or jack and through the space'29 and im mediately in front of the post, whereas without these lugs 23 there would be great liability of the wire striking against the post and becoming bound thereby.

When it is desired to use the device as a wire stretcher, 1t is disposed horizontally for the wire. the wire is engaged between the jaws 32 and 33 after one stretch has been given to it, then the member 17 is again extended, again engaged with the wire by means of the jaws 20 and 21, and again drawn inward into the casing 11 and the free end of the wire again taken up between the jaws 32 and 33. Thus any desired stretch may be given to the wire. It is also possible to engage the hook 22 with an anchor and engage the angular end of the standard 17 with wire fencing. for instance, in any obvious and well known way and thenretract the standard 17 into the casing, thus drawing up the wire fencing.

The use of this device as a wire stretcher is made particularly possible because of the fact that both ends of the casing are open. This will also permit the hook 35 to be inserted beneath an object to be lifted and then the shaft 26 turned to cause the projection of the standard in a direction to press against the ground and thus cause the raising of the casing relative to the standard. Of course,

the skew gearing will hold the standard set against any strain and will also permit the standard to be released slightly when the de vice is used as a wire stretcher in case the wire is stretched too tight without any necessity of releasing the wire and re-tightr ening.

While I have illustrated certain details of construction which I have found to be particularly effective in practice, I do not wish to be limited thereto as this might be changed in many ways without departing from the spirit of the invention as defined in the appended claims.

I claim 1. A jack and wire stretcher of the character described including a casing open at opposite ends, the casing being provided at one end with an outwardly projecting portion, a standard operating longitudinally through the casing and having a rack in one edge, one end of the standard having acter describedcomprising a casing open at at one end being provided with a relatively wide face and the casing and the outer end of the standard being each provided with a wire clamp, and the outer end of the casing being provided with an outwardly projecting anchor and with spacing lugs disposed above the anchor,

3. A wire stretcher and jack of the character described comprising a casing open at opposite ends, a standard operating through the casing and toothed on one edge, the teeth being skewed, a. skew gear mounted within the casing and engaging the teeth of the standard, a shaft operatively supported in bearings'on said casing and extending at an angle to the longitudinal axis of the casing and having a worm engaging said skew gear, the casing at one end being provided with a relatively wide base,'the opposite end of the standard being formed with an outwardly bent portion having wire clamps and the first named end of the casing being provided with an outwardly projecting ]:1ook eonstituting an anchor and with spacing lugs disposed just above the anchor.

i. A combined jack and wire stretcher of the character described comprising a casing open at opposite ends, a standard longitudinally shiftable' through the casin manually operable means mounted upon the casing for shifting said standard, the casing being provided at one end with an outwardly prO ecting anchor, the central portion of the anchor adjacent the wall of the casing being apertured, spaced spacing lugs disposed inward of the anchor and between which a stretched wire may pass, the extremity of the standard remote from the anchor being angularly bent and provided with a wire-engaging clamp, and a wireengaging clamp mounted upon the casing.

5. A combined jack and wire stretcher comprising a casing having opposite side walls and endrwalls defining a longitudinally extending passage, and a standard operating through said passage and having skew teeth, a skew gear mounted between the side walls of the casing and engaging the skew teeth of the standard, a worm operatively mounted upon the casing; and engaging said teeth of the skew gear, the lower end of the side walls of the casing being extended outward and toward each other to constitute a hook, there being an opening between the two side walls and the base of said hook, a pair of lugs extending out from the side walls just inward of the hook and constituting spacing means, the outer end of the standard being angularly bent beyond the side edge of the casing and being provided with wire-clamping means and the side wall of the standard being provided with wire-clamping means.

In testimony whereof I hereunto -afiix my signature.

JOHN W. CHERRY. 

